g++ Color.cc MyDisplay.cc Line.cc Rectangle.cc  Object2DTranformation.cc Cube.cc Object3DTranformation.cc  -c MyDisplay.h Line.h  Object2DTranformation.h Rectangle.h Color.h Cube.h Object3DTranformation.h
g++ main.cpp -o main  Color.o Line.o MyDisplay.o Object2DTranformation.o Matrix.o Rectangle.o Cube.o  -L/usr/X11R6/lib -lX11